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Biology & Geology

Chapter 1 - Support and Movement in Living Organisms

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Chapter 2 - Hormonal Coordination in Living Organisms

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Chapter 3 - Reproduction in Living Organisms

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Chapter 4 - Immunity in Living Organisms

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Chapter 5 - Molecular Biology - DNA Structure and Function

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Chapter 6 - Molecular Biology - RNA, Protein Synthesis and Genetic Engineering

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Chapter 7 - Geology, Earth Sciences and Ecology

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Quiz

Lesson 1 Quiz: Asexual and Sexual Reproduction and Alternation of Generations

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  • Questions count: 10
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1.
The electronic configurations of both Chromium (24Cr) and Copper (29Cu) are anomalous due to the enhanced stability associated with:
Completely empty 4s subshells
Pairing of all electrons in the outer valence level
High electronegativity differences
Half-filled (3d5) and completely filled (3d10) d-subshells respectively
2.
The sum to infinity of the geometric series 16 + 8 + 4 + 2 + ... equals:
30
64
32
24
3.
The derivative of f(x) = 4 x3 - 5 x2 + 7 x - 9 with respect to x is:
f'(x) = 12 x2 - 10 x + 7
f'(x) = 4 x2 - 5 x + 7
f'(x) = 12 x2 - 10 x
f'(x) = 12 x3 - 10 x2 + 7
4.
The universal gas constant R in SI units has the numerical value and dimensions of:
6.022 x 1023 J / K
0.0821 J / mol
8.314 J / (mol . K)
1.38 x 10−23 Pa . m3
5.
A fixed quantity of an ideal gas has a volume of 600 cm3 at 27 °C. If the gas is heated to 127 °C under constant pressure, its new volume will be:
900 cm3
800 cm3
1200 cm3
700 cm3
6.
Plant hypersensitivity is an effective immunological method that includes:
Root loss
Secreting nectar to attract bees
The plant kills some of its infected tissues and cells locally to prevent the spread of the microbe to healthy tissues
Stomata open at night
7.
The decomposition of the corpus luteum in the ovary of a non-pregnant woman at the end of the menstrual cycle results in:
A sharp drop in the concentration of the hormone progesterone leads to the breakdown of the uterine lining, the rupture of its capillaries, and the occurrence of menstruation
Secretion of huge amounts of LH
Placenta formation
Continued growth of the uterine lining
8.
DNA polymerase always adds new nucleotides in a specific direction:
From party 3' to 5' only
In both directions together
randomly
From party 5' To party 3' For new growing bar only
9.
The enzyme responsible for constructing an mRNA strand from one of the two DNA strands (template strand 3' to 5') he:
DNA polymerase enzyme
Binding enzyme
Palace enzyme
RNA polymerase
10.
The enzyme that catalyzes the peptidyl transferase reaction and the formation of the peptide bond between amino acids during translation is:
DNA polymerase enzyme
Release factor protein
Helix enzyme
Part of the rRNA molecule that makes up the subunit of the ribosomal subunit
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